111223110120 has 64 divisors (see below), whose sum is σ = 334210345920. Its totient is φ = 29611405824.

The previous prime is 111223110109. The next prime is 111223110179. The reversal of 111223110120 is 21011322111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111223110120.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 677062 + ... + 825141.

It is an arithmetic number, because the mean of its divisors is an integer number (5222036655).

Almost surely, 2^111223110120 is an apocalyptic number.

111223110120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111223110120 is an abundant number, since it is smaller than the sum of its proper divisors (222987235800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111223110120 is a wasteful number, since it uses less digits than its factorization.

111223110120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502834 (or 1502830 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 111223110120 its reverse (21011322111), we get a palindrome (132234432231).

The spelling of 111223110120 in words is "one hundred eleven billion, two hundred twenty-three million, one hundred ten thousand, one hundred twenty".